P1423
Secondary Air Injection System Bank 1 Insufficient Flow Detected
P1423 is an OBD-II diagnostic trouble code meaning: Secondary Air Injection System Bank 1 Insufficient Flow Detected. Common causes: clogged air channels of the system, secondary air valve malfunction. Estimated repair cost: $17–89.
Symptoms
- Check Engine Light Is On
- Increased level of harmful emissions
- Unstable engine operation at idle
- Reduced engine power
- Noise from the secondary air system
Causes
- Clogged air channels of the system
- Secondary air valve malfunction
- Air pump problems
- Open or short circuit in control circuit
- Sensor or control unit malfunction
How to Fix
- Check the condition of air channels and filters
- Test the operation of the secondary air valve
- Check the serviceability of the air pump
- Diagnose control circuit and sensors
- Clean or replace faulty components
Related codes
Error P1423 by Vehicle Brand
FAQ
What does the P1423 code mean?
P1423 is an OBD-II diagnostic trouble code that indicates: Secondary Air Injection System Bank 1 Insufficient Flow Detected
What causes a P1423 error code?
The most common causes of P1423 include: Clogged air channels of the system; Secondary air valve malfunction; Air pump problems; Open or short circuit in control circuit.
How do I fix a P1423 diagnostic trouble code?
To fix P1423: Check the condition of air channels and filters. Test the operation of the secondary air valve. Check the serviceability of the air pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1423?
Yes, but get it checked soon
How much does it cost to fix P1423?
The estimated repair cost for P1423 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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